Yaegi – Yet Another Go Interpreter

I would have expected a honest benchmark result. Which will be much worse than 6%.

Which is totally fine! an interpreter will of course be much slower. But this seems like the wrong kind of marketing by omission to me.

Dunno what's wrong with your readline but what you describe is default Python behavior. Try installing ipython, you'll get all that and more (such as syntax highlighting, multi-line editing, and much more).

Something that blew my mind recently was using a Lisp repl which was integrated with my text editor.

I just wrote out the code I wanted to toy with in my text editor buffer, and then highlighted it and hit a key command to evaluate it at the repl without even needing to switch over to the repl window.

It would be so cool if we had great support for something similar in non Lisp languages.

Ipython has interactive tab completion (including for imports and locally defined symbols), syntax highlighting, (sane) auto indenting, all in the REPL. It's the foundation of jupyter notebooks.

and /home/mbarkhau/bin/ipy is this

/home/mbarkhau/miniconda3/envs/py37/bin/ipython -i -c import itertools as it; from statistics import ;import functools as ft;import operator as op;import io;import pathlib as pl;import pandas as pd;import numpy as np;import typing as typ;from math import ;import enum;import re;import sys;import os;import ujson as json;import collections;import random;import decimal;import fractions;import time;import datetime as dt;"

I must use it dozens of times a day.

Surely those are programming practices that don't need to go hand-in-hand.

    $ cat > t.go
    package main
    func main() {}
    $ go build t.go
    $ ls -l t
    -rwxr-xr-x  1 f2f  staff  1101432 24 Jul 23:19 t